The "birch" concept reappears with a black dial and a lightweight titanium case.
By now, most of you should be pretty familiar with Grand Seiko's Birch concept. First released in early 2021 as the White Birch, this timepiece with its intricate dial textures and bold silvery white marks the arrival of the Evolution 9 collection as a true member of the GS family. And, in all fairness, the SLGH005 is arguably one of the most important and compelling watches of 2021. We later saw several new additions to the series, including the White Birch Spring Drive SLGA009 and the Green Birch SLGH011. Now, it’s time to launch the Grand Seiko Night Birch SLGH017 in Black Dial and Titanium.
Let's go back to the past first. Last year, Grand Seiko released a cheap swiss watches that will be one of the main talking points in 2021. This striking model features a complex dial, a newly designed case and an innovative high-frequency automatic movement, the White Birch SLGH005 – one we’ve reviewed extensively here and photographed here. We also reviewed its Spring Drive counterpart here, the SLGA009, which at first glance appears to be just a movement update, but actually shows several differences in the dial and case compared to the classic White Birch. Finally, the brand released a boutique-exclusive style, the Green Birch SLGH011, a few months ago. Note that all of these models are made of stainless steel.
These watches, along with more sports-related models released at Watches and Wonders, make up the so-called Evolution 9 series. What we see here is the latest interpretation of the Grammar of Design, a series of rules established by brand designer Taro Tanaka in 1967 with the 44GS model. Without denying the original concept, the idea was to improve on most aspects, including the thickness of the case, ergonomics and overall elegance and sophistication.
Now, in addition to the White Birch and Green Birch, we have the brand new Grand Seiko Night Birch SLGH017 - or, if you prefer, you can call it the Black Birch. At first, the watch might seem like a simple evolution of the colors, with the silver or green dials being replaced by black ones. Well, as we saw when we compared the Automatic and Spring Drive Birch watches, and when we took a closer look at the Green SLGH011, the brand likes to vary some details. Birch is not just a new color.replica Audemars Piguet Royal Oak Offshore
The most important update to this new Grand Seiko Night Birch is the use of high-strength titanium for the case and bracelet. However, the proportions, shape and decoration are the same. This means the watch is in most respects the same as the birch or green birch models, with a diameter of 40mm, a thickness of 11.7mm and a manageable 47mm lug-to-lug. The case retains the same combination of brushed flanks, polished accents on the sides of the lugs (with Zaratsu technology, of course), and a bezel with polished bevels and a vertical brushed top. The screw-down crown is water-resistant to 100 meters, and the sapphire crystal on top is box-shaped with an anti-reflective coating. There's nothing new here, it's exactly the same as previous Birch watches.
However, if design and proportions are preserved, the use of titanium on this Night Birch SLGH017 means two important changes. First, the weight of the best replica tourbillon watches is significantly reduced, as titanium is approximately 30% lighter than steel. So while the Green Birch has a total weight of 178 grams, you can expect the Titanium Birch to be around 135 grams (we were unable to measure during our short watch session). The difference is huge and greatly increases the comfort of the watch. On the other hand, some collectors prefer the weight of steel on the wrist. Another difference is color. It's cooler, darker, and has a different sheen that complements the black dial.
The 22mm 3-link bracelet is the same material, again combined with a brushed finish and polished accents. It is closed by a folding clasp, which still has no micro-adjustment system. A large bracelet may not be to everyone's taste, but it brings great stability every day.
The second strong evolution can be seen from the name of this SLGH017, that is the color of the dial. Nigth Birch refers to the new black color of the dial, and of course the signature texture that first appeared on Birch last year. As with the green version, the final execution feels more discreet and refined, although the craftsmanship and pattern are identical to the silver and white version. The texture appears, just because of the different colors, it's less pronounced, less rough. Since the black tone of choice is matte and doesn't have the same shimmer as the SLGH005, the dial as a whole is more subtle, or less dramatic, depending on how much you like birch.JACOB & CO ASTRONOMIA TOURBILLON
The rest of the dial is the same as Green Birch and therefore slightly different from White Birch. The marker applied here stands out against the dark background with a striped texture on top and highly polished bevels on the sides. Likewise, the hands have a brushed finish on the flat surface, which contrasts with the polished accents on the edges. Remember, White Birch has fully polished hands and markers. Another small difference is the central seconds hand, which is untreated steel and now has a small cap on the stem – again, the same as the green version, but different from the white version. A framed date window remains visible at 3 o'clock.
Beneath the caseback is the in-house automatic movement Caliber 9SA5. A modern and innovative movement, it relies on a 5Hz (36,000vph) high-frequency escapement geometry known as the Double Impulse escapement, working in conjunction with a free balance wheel. The benefits are more precision, better vibration resistance and greater efficiency. The overall architecture of the movement is modern, with a thinner profile, and two barrels provide a power reserve of 80 hours. The movement is rated at +5 to -3 seconds per day. Finally, the trim is more refined than past GS series, with beautifully designed bridges, pinstripes, beveled edges...replica watches for sale
Technical Specifications – GRAND SEIKO EVOLUTION 9 HI-BEAT SLGH017 Case: 40mm diameter x 11.7mm height - 47mm lug to lug - high strength titanium case, brushed and Zaratsu polished - box-shaped sapphire crystal with anti-reflective coating - sapphire case back, screw-in - Screw down crown - 100m water resistance Dial: Black dial with embossed texture, inspired by birch forests at night, with transparent flat polished lacquer - appliquéd, faceted and striped hour markers, faceted and beveled brushed hands Movement: Caliber 9SA5, in-house - automatic winding - 47 jewels - double impulse escapement and Grand Seiko free spring balance - 36,000vph (5Hz frequency) - 80 hour power reserve - stop seconds - accuracy -3/ +5 sec/day - hours, minutes, seconds and date Bracelet: Brushed and polished three-link high-strength titanium bracelet with deployant clasp Ref: SLGH017